238481375820 has 24 divisors (see below), whose sum is σ = 667747852464. Its totient is φ = 63595033536.

The previous prime is 238481375819. The next prime is 238481375837. The reversal of 238481375820 is 28573184832.

It is a super-2 number, since 2×238481375820² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1987344739 + ... + 1987344858.

It is an arithmetic number, because the mean of its divisors is an integer number (27822827186).

Almost surely, 2^238481375820 is an apocalyptic number.

238481375820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238481375820 is an abundant number, since it is smaller than the sum of its proper divisors (429266476644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238481375820 is a wasteful number, since it uses less digits than its factorization.

238481375820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974689609 (or 3974689607 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 238481375820 in words is "two hundred thirty-eight billion, four hundred eighty-one million, three hundred seventy-five thousand, eight hundred twenty".